Crossword Clue:

one who studies radiobiology

Answer	Crossword Clue
OCULIST	One who studies irises
YOGI	One who studies asanas and pranayama
HARRYPOTTER	Fictional wizard who studies at Hogwarts

PINER	One who yearns
ESSAYER	One who tries
HEEDER	One who minds
TASTER	One who sips
HAWER	One who hesitates
ALUM	One who reunes
YOGI	One who meditates
GIVER	One who tithes

FREELOADER	One who mooches
CENTER	One who snaps
EPICURE	One who discriminates?
JEERER	One who hoots
KEENER	One who wails
MOM	One who delivers
CAT	One who litters
HEIR	One who succeeds

EELER	One who sniggles
STOOLIE	One who sings
BIGMOUTH	One who blabs
CANARY	One who sings
ADMAN	One who pitches
ATTENDEE	One who shows
RAT	One who blabs
JUDGE	One who tries

OWER	One who charges
AIDE	One who takes messages
SOLOARTIST	One who plays alone
TUNER	One who pulls strings
XER	One who crosses out
REF	One who cries foul?
LIVESALIE	Hides who one is
NARC	One who monitors traffic

MATADOR	One who accepts charges
ATTENDEE	One who shows up
CLAM	One who won't tell
ARBITER	One who settles arguments
RISER	One who 48-Down